The Concentration Of Ethanol From Vodka - 1631 Words

Abstract The concentration of ethanol in vodka was determined by back titration. A known amount of excess potassium chromate was added to the vodka sample to convert ethanol into acetic acid by oxidation. The amount of leftover chromate was determined by titration with iron (II) solution, prepared from dissolution of ferrous ammonium sulfate. Using the amount of chromate added to the vodka solution, the amount of chromate reacted was determined and used to find the amount of ethanol in the sample. A potentiometer in the mV mode was used to create first and second derivative curves for determining end points. The concentration of ethanol determined was 39.91%, with standard deviation of 0.13%. The percent error was 0.22%, with the true concentration being 40.00%. Introduction The consumption of alcoholic beverages, which has increased, has been presenting several health complications in recent years. The center for disease control explained that the act of drinking in order to become intoxicated has become more popular recently, and that this has led to increases in alcohol poisoning, high blood pressure, stroke, liver disease, and neurological damage, as well as both intentional and unintentional injuries [1]. Although alcoholic beverages contain many different ingredients, the most significant is ethanol, as it is most commonly responsible for the health problems mentioned above. This study’s primary focus was to identify the concentration of ethanol in an unknownShow MoreRelatedThe Energy Of Energy Usage1129 Words   |  5 PagesIntroduction Historically, the distillation of alcohol (spirits, wine and vodka) has been a high-end consumer in terms of energy usage. According to U.S. Dept. of Energy, there are more than 40,000 distillation columns in North America and they consume 40% of the total energy used to operate plants in chemical industries [1]. 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The laws around alcohol have created many disputesRead More_x000C_Introduction to Statistics and Data Analysis355457 Words   |  1422 Pageswritten permission of the publisher. Thomson Higher Education 10 Davis Drive Belmont, CA 94002-3098 USA For more information about our products, contact us at: Thomson Learning Academic Resource Center 1-800-423-0563 For permission to use material from this text or product, submit a request online at http://www.thomsonrights.com. Any additional questions about permissions can be submitted by e-mail to thomsonrights@thomson.com. Printed in the United States of America 1 2 3 4 5 6 7 11 10 09 08